Service difficulty report · Floor Panel · Boeing 7377H4

Difficulty date
May 3, 2022
Submitted
June 9, 2022
Operation
Air carrier
Aircraft
N477WN
Make and model
Boeing 7377H4
Aircraft serial
33988
Aircraft time
60,414 hours, 35,826 cycles
Part
Floor Panel
Part number
221BF
Condition
Delaminated
Location
Cabin Floor
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

FLOOR PANEL 221BF UPPER SURFACE EDGE; FWD R/H CORNER IS DELAMED. / STARTED DAMAGE REMOVAL IAW SRM 53-00-50-2R-5 PARA 3. STEPS A-C.;[05] COMPLETED DAMAGE REMOVAL & SURFACE PREPARATION IAW SRM 53-00-50-2R-5 PARA 3 STEPS A-E.;[06] VERIFIED CORRECTIVE ACTION ITEM 1-5.;[07] MADE CLEANED & INSTALLED REPAIR CORE USING BMS8-124 CL4 GR5 CORE LOT 1287137 & BMS5-28 TYPE 19 POTTING COMPOUND LOT AKZAP8108K IAW SRM<BR>53-00-50-2R-5 PARA 3 STEPS F-I . CURED AT ELEVATED TEMPERATURE USING<BR>CAL TOOL THERMOMETER ID ATS1777 SN 34910028WS CAL DUE 08/2022;[08] USING BMS9-3 STYLE 1581 GLASS LOT 1393735-8 & BMS8-201 TYPE III RESIN<BR>LOT AK1JP9149K MADE REPAIR PLIES IAW SRM 53-00-50-2R-5 PARA 3. STEP J.<BR>OK TO LAY UP .;[09] VERIFIED CORRECTIVE ACTIONS 7 AND 8<BR><BR>OK TO INSTALL REPAIR PLIES; LAID UP THE REPAIR PLIES VACUUM BAGGED ; PERFORMED LEAK CHECK & SET TO CURE IAW SRM 53-00-50-2R-5 PARA 3 .K . (1) STEPS (A)-(C).; REPAIR PLIES CURED IAW SRM 53-00-50-2R-5 PARA 3 . L . (1) STEPS (A) & (B)<BR>REF CAL TOOL THERMOMETER ID ATS1777 SN 34910028WS CAL DUE 08/2022<BR>VACUUM GAGE ID ATS2553 SN 5432766772 CAL DUE 02/2023.;[13] UNBAGGED REPAIR AND TRIMMED EXCESS MATERIAL IAW SRM 53-00-50-2R-5 PARA 3.L/<BR>ALL PREVIOUSLY REMOVED INSERTS TO BE INSTALLED ON FAULT #TTG8Q00C8BEW.;[14] FINAL INSPECTION. JOB COMPLETE PER SRM 53-00-50-2R-5.;[15] FINAL INSPECTION. JOB COMPLETE PER SRM 53-00-50-2R-5.

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